Implement Borda count and Schulze method for ranking
Implement Borda count and Schulze method for ranking

chengsoonong/mclass-sky,chengsoonong/mclass-sky,chengsoonong/mclass-sky,alasdairtran/mclearn,alasdairtran/mclearn,alasdairtran/mclearn,alasdairtran/mclearn,chengsoonong/mclass-sky